Material: 3/8" thick extruded expanded polystyrene foam, 4'x 60' rolls.
The industry standard Thermal Conductivity Resistance test method using ASTM Standard C-518 - "Standard Test Method for Steady-State Heat Flux Measurements and Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus" was used for testing.
The Barrier was also tested as part of an 8" concrete assembly to create a realistic installation setting. In this test case, the assembly with Barrier has an R value of 4 and with the Barrier XT -an R value of 5.7.
The industry standard Water Permeability Test Method (ICBO Sections 4.6.1 & 4.6.2) and Water Vapor Permeability Test Method (Procedure B of ASTM E96) were used for moisture transfer testing.
| Permeance (grains/hr ft x 2 in. Hg) | Permeability (grains/hr ft x 2 in. Hg) |
| 0.000 | 0.000 |
Additional Comments by testing facility:
"This product meets or exceeds the ICBO conditions for acceptance. At the end of 24 hours, there was NO indication that any water had dripped from the underside of the specimens. In fact, a 3.5" head of water (rather than the required 2.0" head for 24 hours) was employed, with the same results after a period of 96 hours".
ALL TESTING HAS BEEN PERFORMED BY A CERTIFIED TESTING LABORATORY: GEOSCIENCE LTD. - Laboratory Testing Division.
Note: These typical property values are intended as guidelines only, and not as specification limits.
R-Value means resistance to heat flow, the higher the R-Value, the greater the insulating power.